Valco Fittings - infochroma ag

CHEMINERT FITTINGS
Low Pressure Standard Tube End Fittings and External Nuts
Standard flanged tube end fittings 1/4-28
The basic component of the Cheminert system is the polypropylene nut,
retained on PTFE or FEP tubing by a flange formed with a Cheminert flanging
tool (page 70). This is an excellent method for connecting fluorocarbon
tubing, as there is no reduction of the inside diameter and no binding or
twisting of the tubing when the fitting is tightened. A mating of the parts is
achieved with zero dead volume, making this an ideal fitting for biological
systems.
Cheminert tube end fittings come in twelve different colors for system color
coding, and are available for 1/16" or 1/8" OD fluorocarbon tubing. (While in
theory other polymers could be molded to form a flange, only fluorocarbons
such as PTFE or FEP have low-temperature malleability and good form
retention at operating temperatures.) Tube end fittings attach directly to
Cheminert valves and fittings, and are easily joined to each other with a union.
Tightening by hand is all that is required to make a leak-free seal at 500 psi
liquid, although for long term reliability a wrench could be used to apply an
additional 1/8 turn.
Packages include the same number of washers as fittings.
Flanged fittings 1/16" OD 1/8" OD
(pkg/10) Prod No Prod No
TUBING NUT WASHER FLANGE
Black CF-1BK CF-2BK
Blue CF-1BE CF-2BE
Brown CF-1BR CF-2BR
MORE INFORMATION
High pressure
fittings ........pp 63-66
PTFE and FEP
tubing. ..............90
TECH TIP
To make up standard
flanged tube end fittings,
use the flanging tool on
page 70.
Flanged tube end fitting
Dark gray CF-1DG CF-2DG
Green CF-1G CF-2G
Lavender/pink CF-1L CF-2L
Natural CF-1N CF-2N
Orange CF-1E CF-2E
Purple CF-1P CF-2P
Red CF-1R CF-2R
White CF-1W CF-2W
Yellow CF-1Y CF-2Y
Assorted (pkg/12, one of each color)
CF-1A
CF-2A
Washers (pkg/10) CF-W1 CF-W2
A flanging starter kit,
complete with flanging
tool, flanging tips, and
an array of tubing and
fittings, is also available.
(See page 70.)
TECH TIP
Use our external nut
tube end fittings to make
true zero volume butt
connections without a
coupling.
External nuts for flanged tube ends
1/4-28
External nuts with female 1/4-28 threads are designed for
use on tubing with a flanged end, just like the standard
tube end fittings. Use them instead of a union or
coupling to make a zero volume butt connection.
Package of 5: PEEK CTFE
Tubing Prod No Prod No
OD
1/16" CEN1PK CEN1KF
1/8" CEN2PK CEN2KF
www.vici.com | Valco Instruments Co. Inc. Sales: 800–367–8424 Fax: 713–688–8106 | 69